<script setup lang="ts">
import { uploadAPI } from '@/apis/commont';
import { createEnterpriseAPI, getIndustryListAPI } from '@/apis/enterprise';
import type { EnterpriseParams, Industry } from '@/types/enterprise';
import { CircleCheck, Upload } from '@element-plus/icons-vue';
import { ElMessage, type FormInstance, type FormRules, type UploadRawFile, type UploadRequestOptions, type UploadUserFile } from 'element-plus';
import { ref } from 'vue';
import { useRouter } from 'vue-router';

// 表单数据，根据后端接口定义字段和类型
const addForm = ref<EnterpriseParams>({
  name: '', // 企业名称
  legalPerson: '', // 法人
  registeredAddress: '', // 注册地址
  industryCode: undefined, // 所在行业
  contact: '', // 企业联系人
  contactNumber: '', // 联系人电话
  businessLicenseUrl: '', // 营业执照url
  businessLicenseId: 0 // 营业执照id
})

// 表单校验规则
const addRules = ref<FormRules<EnterpriseParams>>({
  name: [
    { required: true, message: '请输入企业名称', trigger: 'blur' },
    { min: 2, max: 20, message: '长度在 2 到 20 个字符', trigger: 'blur' }
  ],
  legalPerson: [
    { required: true, message: '请输入法人', trigger: 'blur' }
  ],
  registeredAddress: [
    { required: true, message: '请输入注册地址', trigger: 'blur' }
  ],
  industryCode: [
    { required: true, message: '请选择行业', trigger: 'change' }
  ],
  contact: [
    { required: true, message: '请输入企业联系人', trigger: 'blur' }
  ],
  contactNumber: [
    { required: true, message: '请输入联系人电话', trigger: 'blur' },
    { pattern: /^1[3-9]\d{9}$/, message: '请输入正确的手机号', trigger: 'blur' }
  ],
  businessLicenseUrl: [
    { required: true, message: '请上传营业执照', trigger: 'blur' }
  ]
})

// 获取行业列表
const industryList = ref<Industry[]>([])
const getIndustryList = async () => {
  const res = await getIndustryListAPI()
  // console.log('res', res);
  industryList.value = res.data
}
getIndustryList()

// 上传的文件列表, vue3 版组件库支持 v-model 双向绑定
const fileList = ref<UploadUserFile[]>([])
// 自定义上传
const onUploadRequest = async (options: UploadRequestOptions) => {
  // console.log('options', options);
  // 1. 准备 FormData 对象
  const fd = new FormData()
  // 2. 根据后端要求准备字段
  fd.append('file', options.file)
  fd.append('type', 'businessLicense')
  // 3. 调用接口上传文件
  const res = await uploadAPI(fd)
  // 保存营业执照 url 和 id，用于添加企业
  addForm.value.businessLicenseUrl = res.data.url
  addForm.value.businessLicenseId = res.data.id
  // 主动触发校验(如果校验通过，会清除错误信息)
  formRef.value?.validateField('businessLicenseUrl')
  // 4. 检查上传结果，并 return 存储到 response 属性中
  return res.data.url
}

// 删除上传文件
const removeUpload = () => {
  // 主动清楚营业执照 url 和 id
  addForm.value.businessLicenseUrl = ''
  addForm.value.businessLicenseId = undefined
  // 主动触发校验，提醒用户
  formRef.value?.validateField('businessLicenseUrl')
}

// 在 before-upload 钩子中限制用户上传文件的格式和大小
const beforeUpload = (rawFile: UploadRawFile) => {
  // size 的单位是 Byte
  // 5M = 5 * 1024 * 1024
  if (rawFile.size > 5 * 1024 * 1024) {
    ElMessage.error('文件过大, 请上传5M以下的文件')
    return false
  } else if (['image/jpeg', 'image/png'].includes(rawFile.type) === false) {
    ElMessage.error('文件格式不正确, 请上传图片')
    return false
  }
  return true
}

// 用于表单提交时，整个表单校验
const formRef = ref<FormInstance>()

// 获取路由实例
const router = useRouter()
// 加载状态按钮(禁用提交，避免重复提交)
const submitLoading = ref(false)
// 确认提交
const onSubmit = async () => {
  try {
    // 表单校验
    await formRef.value?.validate()
    // 把按钮设置为加载状态(禁用提交，避免重复提交)
    submitLoading.value = true
    // 提交表单数据给后端
    await createEnterpriseAPI(addForm.value)
    // 轻提示
    ElMessage.success('添加成功')
    // 返回上一页
    router.back()
  } catch {
    // 提交失败，注意恢复按钮状态
    submitLoading.value = false
  }
}

// 重置表单
const onReset = () => {
  formRef.value?.resetFields()
}
</script>

<template>
  <div class="add-enterprise">
    <header class="add-header">
      <el-page-header content="添加企业" @back="$router.back()" />
    </header>
    <main class="add-main">
      <div class="form-container">
        <div class="title">企业信息</div>
        <div class="form">
          <el-form ref="formRef" :model="addForm" :rules="addRules" label-width="100px">
            <el-form-item label="企业名称" prop="name">
              <el-input v-model="addForm.name" />
            </el-form-item>
            <el-form-item label="法人" prop="legalPerson">
              <el-input v-model="addForm.legalPerson" />
            </el-form-item>
            <el-form-item label="注册地址" prop="registeredAddress">
              <el-input v-model="addForm.registeredAddress" />
            </el-form-item>
            <el-form-item label="所在行业" prop="industryCode">
              <el-select v-model="addForm.industryCode" clearable>
                <el-option v-for="item in industryList" :key="item.industryCode" :label="item.industryName"
                  :value="item.industryCode" />
              </el-select>
            </el-form-item>
            <el-form-item label="企业联系人" prop="contact">
              <el-input v-model="addForm.contact" />
            </el-form-item>
            <el-form-item label="联系电话" prop="contactNumber">
              <el-input v-model="addForm.contactNumber" :maxlength="11" />
            </el-form-item>
            <el-form-item label="营业执照" prop="businessLicenseUrl">
              <!-- 
                :http-request                  自定义上传函数
                accept="..png, .jpg, .jpeg"    限制上传文件类型
                :before-upload="beforeUpload"  上传文件之前的钩子，校验文件大小和格式
              -->

              <el-upload :http-request="onUploadRequest" list-type="picture" :limit="1" v-model:file-list="fileList"
                :before-upload="beforeUpload" accept="..png, .jpg, .jpeg" @remove="removeUpload">
                <!-- 带图标的上传按钮，注意安装图标库，使用时需要导入 Upload 图标  -->
                <el-button v-if="fileList.length === 0" type="primary" :icon="Upload">点击上传</el-button>
                <el-button v-else type="success" disabled :icon="CircleCheck">已上传</el-button>
                <template #tip>
                  <div class="el-upload__tip">
                    支持扩展名：.png .jpg .jpeg, 文件大小不得超过5M
                  </div>
                </template>
              </el-upload>
            </el-form-item>
          </el-form>
        </div>
        {{ addForm }}
      </div>
    </main>
    <footer class="add-footer">
      <div class="btn-container">
        <el-button @click="onReset()">重置</el-button>
        <el-button @click="onSubmit()" type="primary" :loading="submitLoading">确定</el-button>
      </div>
    </footer>
  </div>
</template>


<style scoped lang="scss">
.add-enterprise {
  background-color: #f4f6f8;
  height: 100vh;

  .add-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
    height: 64px;
    line-height: 64px;
    font-size: 16px;
    font-weight: bold;
    background-color: #fff;

    .left {
      span {
        margin-right: 4px;
      }

      .arrow {
        cursor: pointer;
      }
    }

    .right {
      text-align: right;
    }
  }

  .add-main {
    background: #f4f6f8;
    padding: 20px 130px;

    .form-container {
      background-color: #fff;

      .title {
        height: 60px;
        line-height: 60px;
        padding-left: 20px;
      }

      .form {
        margin-bottom: 20px;
        padding: 20px 65px 24px;

        .el-form {
          display: flex;
          flex-wrap: wrap;

          .el-form-item {
            width: 50%;
          }
        }
      }
    }
  }

  .add-footer {
    position: fixed;
    bottom: 0;
    width: 100%;
    padding: 24px 50px;
    color: #000000d9;
    font-size: 14px;
    background: #fff;
    text-align: center;
  }
}
</style>